Hexadecimal to decimal or vice versa with printf

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  • Decimal to hexadecimal: 
$ printf "%02X\n" decimal number
  • Hexadecimal to decimal: 
$ printf "%d\n" hexadecimal number

Examples

  • Convert 1024 to hexadecimal. 
$ printf "%02X\n" 1024
400
  • Convert 0x400 to decimal. 
$ printf "%d\n" 0x400
1024
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